Home / 445,910.36-669,084.24-209,272.28

Finding the Fourth Proportional to 445,910.36, 669,084.24 and 209,272.28

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Solution

The fourth proportional to 445,910.36, 669,084.24 and 209,272.28 is: 314,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,910.36 : 669,084.24 = 209,272.28 : x
  2. Step 2: Convert to fraction form
    445,910.36/669,084.24 = 209,272.28/x
  3. Step 3: Cross multiply
    445,910.36x = 669,084.24 × 209,272.28
  4. Step 4: Simplify right side
    445,910.36x = 140,020,784,416.87
  5. Step 5: Solve for x
    x = 140,020,784,416.87/445,910.36
  6. Step 6: Final answer
    x = 314,011.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.